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Finding the Fourth Proportional to 71,863.88, 107,162.73 and 66,877.52

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Solution

The fourth proportional to 71,863.88, 107,162.73 and 66,877.52 is: 99,727.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,863.88 : 107,162.73 = 66,877.52 : x
  2. Step 2: Convert to fraction form
    71,863.88/107,162.73 = 66,877.52/x
  3. Step 3: Cross multiply
    71,863.88x = 107,162.73 × 66,877.52
  4. Step 4: Simplify right side
    71,863.88x = 7,166,777,618.83
  5. Step 5: Solve for x
    x = 7,166,777,618.83/71,863.88
  6. Step 6: Final answer
    x = 99,727.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.